Mounting device for paper rolls



July 27, 1965 A. B. DAVIDSON 3,197,153

MOUNTING DEVICE FOR PAPER ROLLS Filed Aug. 13, 1963 lliifi;///////////,s

INVENTOR. QLFRED B. DAVIDSON ATTORNEY United States Patent 3,197,153MOUNTING DEVICE FOR PAPER ROLLS Alfred B. Davidson, Tarentum, Pa.,assignor to Allegheny Ludlum Steel Corporation, Breckenridge, Pa., acorporation of Pennsylvania Filed Aug. 13, 1963, Ser. No. 301,751 1Claim. (Cl. 24272) This invention relates to mounting devices, and moreparticularly to a device for facilely mounting rolled paper strip whichwill allow the paper to be unwound under controlled back tension.

The use of paper for the protection of finished metal surfaces is acommon expedient. For example, plates of stainless steel having highlypolished surfaces have paper glued onto their polished surfaces toprotect these surfaces when the plates are stacked or moved.Conventionally, this gummed paper is stored rolled on a cardboard tube.The tube is mounted on a device which will allow the paper to be unwoundfrom the roll and spread over the surface of a stainless steel plate,the plate being supported on a bed adjacent the roll of paper. When theproper length of paper is unwound, it is severed from the roll andpasted onto the surface of the plate. The plate is removed and a newplate is positioned and similarly covered. Prior art devices formounting this rolled paper to support it in position for applying to theplate, have proved to be cumbersome, awkward and erratic in the backtension that they apply to the paper as it being unwound. This causesfrequent tearing of the paper when the back tension becomes too great orrippling of the paper if the back tension is not sufiicient to maintainan even pay-off as the paper is being unwound. It is also very diflicultto remove the expanded cardboard tubes from these devices and replacethem with new rolls of paper. This causes unnecessary delays inreplacing spent rolls with new rolls of paper.

It is, therefore, a principal object of this invention to provide adevice for mounting a tubular member which will provided for facileremoval and replacement of the. tubular metal.

It is another principal object of this invention to provide mountingdevices for a tubular member which will easily and accurately controlthe back tension as strip material is unwound from the member.

A further, more specific object of this invention is the provision of amounting device for paper rolled on a tube which device has a singleadjustment to provide for the facile removal of the tube of the expendedroll and replacement with a full roll and which will control the backtension on the paper as it is being unwound.

These and other objects together with a fuller understanding of theinvention will become apparent from the following description when takenin conjunction with the accompanying drawing in which:

The single figure is an elevation view of the device of this inventionpartially in section with parts broken away for clarity.

Referring now to the drawing the device of this invention is shownmounting a cardboard tube around which a strip of paper is coiled, thiscoil of paper being designated by reference character 12. This deviceincludes a hard rubber or other elastomer drum 14 over which thecardboard tube 10 is telescoped. In its relaxed condition, the drum 14has a circumference slightly less than the inner circumference of thecardboard tube 10. A pair of brass sleeves 16 and 18 are provided whichcan be inserted in the opposite ends of the drum 14 and which journalthe drum 14 for rotation on a stationary shaft 20. Thus, when the paperis unwound from the cardboard tube 10, the sleeves 16 and 18 will allowthe drum to rotate on the shaft 20. The shaft 20 is provided with anannular collar 22 secured thereto by means of a pin 24. The collar 22has a flat bearing face 26 which abuts against a mating bearing face 28on the sleeve 18. The shaft 20 is threaded at 30 and a threaded collar32 is threaded thereon. The collar 32 has a bearing face 34 which actsagainst a mating bearing face 36 on the sleeve 16. A set screw 38 with anylon tip 40 is provided in the collar 32 and is adapted to releasablysecure the collar 32 against rotation at any selected position on thethreads 38.

When a coil of paper is to be mounted on the device as shown in thefigure, the collar 32 is removed from the shaft 20. The drum 14 isinserted into the cardboard tube 10 and the sleeves 16 and 18 areinserted in the opposite ends of the drum 14. The sleeves mounting thedrum 14 and cardboard tube 10 with the coiled paper thereon, are slippedonto the shaft 20 with the bearing face 28 of the sleeve 18 abutting thebearing face 26 on the collar 22. The collar 32 is then screwed onto thethreads 30 tightly against the sleeve 16. This tightening of the collar32 will cause an axial compressive force on the hard rubber drum 14which will cause the drum 14 to expand radially and thus tightly engagethe inner surface of the cardboard tube 10. This will frictionallysecure the cardboard tube 10 on the elastomer drum 14. This axialcompression force caused by the tightening of the collar 32 will alsocause a friction force between the bearing faces 26 and 28 and betweenthe bearing faces 34 and 36 which, in turn, will cause a drag or backtension resisting the rotation of the drum 14 on the shaft 20. Theamount of drag or resistance will depend upon how tightly the collar 32is screwed against the sleeve 16 and by varying this pressure the amountof back tension can be controlled. When the proper back tension has beenachieved, the set screw 38 is tightened against the threads 30 whichwill prevent movement of the collar 32 as the paper is being unwound.

When the paper has been completely unwound from the cardboard tube theset screw 38 is loosened and then the collar 32 is unscrewed from theshaft. This will relieve the compression on the rubber drum 14 allowingit to return to the relaxed condition. In the relaxed condition thecircumference of the drum is less than the inside circumference of thespent cardboard tube 10, which can then be easily slipped off the drum10 and a new tube of rolled paper is then placed on the drum. The collar32 is then screwed back onto the shaft and the back tension is adjustedas described above easily and facilely without delay.

While one embodiment of this invention has been shown and described,other adaptations and modifications may be made without departing fromthe spirit and scope of the appended claim.

I claim:

Apparatus for rotatably mounting a tubular member on a stationary shaftcomprising, an annular elastomer drum adapted to be inserted into saidtubular member and to expand radially to engage the inner surface ofsaid tubular member, a pair of sleeves adapted to be inserted in theopposite ends of the elastomer drum and journal the drum for rotation onsaid shaft, each of said sleeves having a thrust bearing face, a firstcollar non-rotatably carried by said shaft having a bearing surfacecoactable with the bearing face of one of said sleeves, and a secondcollar threadably engageable on said shaft, said second collar having aface coactable with the bearing face of the other of said sleeves,whereby, when the second collar is loosened away from its associatedsleeve the tubular member can be facilely removed from the drum and whenthe second collar is tightened against the associated sleeve the axialcompressive forces caused by the coaction of the collars and sleeveswill cause the drum to expand,

D Y radially .to engage the inner surfaces of the drum and will controlthe back tension on the drum, by providing a frictional force to resistrotation of the sleeves on the shaft.

References Cited'by the Examiner UNITED STATES PATENTS 163,217 5/75Lawson 242-72 1,518,026 12/24 Van Sluys 242-42 1,878,264 9/32 Claybourn242-72 4 Templeton et a1. 242-72 Brunner 242-72 Daugherty 242-466 XPrevost 242-72 Cannard 242-682 Anderson.

RUSSELL C. MADER, Primary Examiner.

'MERVIN STEIN, Examiner.

